High-performance polymers for space: DEMGY solutions for orbital and onboard applications

In the space industry, on-board components have to operate flawlessly in non-standard environments: vacuum, radiation, thermal shock, vibration and extreme temperatures ranging from cryogenic to very hot. In this context, High Performance Polymers (HPP) are emerging as lightweight, stable and robust alternatives to metals, while meeting the critical requirements of outgassing, dimensional stability and space vacuum compatibility.

DEMGY has been supporting space programs for over 20 years, designing and manufacturing machined, injected or 3D-printed technical parts for orbital missions, scientific instruments and launch vehicles.

• ASTM E595-certified low outgassing (PEEK, PCTFE, Vespel®, PEKK)
• Resistant to radiation, vacuum and severe thermal cycling
• Cryogenic compatibility : stability down to -200°C
• Electrical insulation and chemical inertia
• Custom manufacturing: CNC machining, molding, 3D space printing

Instrument holders in Vespel® or PEI

Used in orbital modules and probes for dimensional stability, low thermal expansion and stable behavior in microgravity.

Examples include

• Guide rings and thrust washers (to protect static vanes against seizure and wear)
• Composite shrouds (replace metal structures in compressors)
• Control parts for moving surfaces (torque reduction, longer service life)
• V-Grooves and nacelle inserts (CP-0664 anti-friction composite solution, replacing brittle metal coatings)
• Hydrogen applications (low permeability, cryogenic stability and excellent sealing under pressure)
   

Cryogenic seals in PCTFE or PTFE

For liquefied gas tanks:

• Perfect seal at low temperatures
• Low gas permeability
• Chemical compatibility

Printed PEKK parts for secondary structures

Ideal for :

• Lightweight jigs and fixtures
• On-board cable guides
• Topologically optimized non-pressurized parts

Components for hydrogen applications

• Low permeability, cryogenic compatibility
• Dimensional stability under pressure
• Used for propulsion and storage of alternative fuels

Thanks to its high-precision manufacturing equipment and a project-oriented culture for space and New Space, DEMGY is able to produce critical parts in small series, rapid prototyping and qualification support (thermal tests, watertightness, material compatibility, etc.).

Our HPP materials meet the requirements of space agencies and manufacturers, from payloads to launchers.

Contact our team for customized development to meet your orbital, cryogenic or optical constraints.